diff --git a/lib/federation/activity_pub/utils.ex b/lib/federation/activity_pub/utils.ex
index 84efe8ff0..6896dc6cc 100644
--- a/lib/federation/activity_pub/utils.ex
+++ b/lib/federation/activity_pub/utils.ex
@@ -337,8 +337,9 @@ defmodule Mobilizon.Federation.ActivityPub.Utils do
       message: "Object contains an actor object with invalid type: #{inspect(type)}"
   end
 
-  def get_actor(%{"actor" => nil, "attributedTo" => nil}) do
-    raise ArgumentError, message: "Object contains both actor and attributedTo fields being null"
+  def get_actor(%{"actor" => nil, "attributedTo" => nil} = object) do
+    raise ArgumentError,
+      message: "Object contains both actor and attributedTo fields being null: #{inspect(object)}"
   end
 
   def get_actor(%{"actor" => _}) do
diff --git a/test/federation/activity_pub/utils_test.exs b/test/federation/activity_pub/utils_test.exs
index 28a271b76..83f058681 100644
--- a/test/federation/activity_pub/utils_test.exs
+++ b/test/federation/activity_pub/utils_test.exs
@@ -129,7 +129,7 @@ defmodule Mobilizon.Federation.ActivityPub.UtilsTest do
 
     test "with no actor information" do
       assert_raise ArgumentError,
-                   "Object contains both actor and attributedTo fields being null",
+                   "Object contains both actor and attributedTo fields being null: %{\"actor\" => nil, \"attributedTo\" => nil}",
                    fn ->
                      Utils.get_actor(%{
                        "actor" => nil,